WO2002036923A3 - Casing drilling connector with low stress flex groove - Google Patents

Casing drilling connector with low stress flex groove Download PDF

Info

Publication number
WO2002036923A3
WO2002036923A3 PCT/US2001/050537 US0150537W WO0236923A3 WO 2002036923 A3 WO2002036923 A3 WO 2002036923A3 US 0150537 W US0150537 W US 0150537W WO 0236923 A3 WO0236923 A3 WO 0236923A3
Authority
WO
WIPO (PCT)
Prior art keywords
flex groove
joints
low stress
tapered
profile
Prior art date
Application number
PCT/US2001/050537
Other languages
French (fr)
Other versions
WO2002036923A2 (en
Inventor
Richard W Delange
Merle Edward Evans
Richard Griffin
Original Assignee
Grant Prideco Lp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grant Prideco Lp filed Critical Grant Prideco Lp
Priority to GB0309281A priority Critical patent/GB2388171B/en
Priority to BRPI0115128-2A priority patent/BR0115128B1/en
Priority to AU2002232873A priority patent/AU2002232873A1/en
Priority to CA002427280A priority patent/CA2427280C/en
Priority to MXPA03003905A priority patent/MXPA03003905A/en
Publication of WO2002036923A2 publication Critical patent/WO2002036923A2/en
Publication of WO2002036923A3 publication Critical patent/WO2002036923A3/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded

Abstract

An oilfield tubular string (10, 60, 60A) comprising a plurality of elongated joints having one or both ends threaded. The joints may be connected by a coupling including a generally sleeve-shaped coupling body having a tapered upstream thread profile and a tapered downstream thread profile for threaded engagement with a mating profile of a respective joint. The coupling body includes a low stress flex groove (30) having a selected box thread runout bevel angle, and all transitions in the flex groove between surfaces are radiused to greater than 0.100 inches to minimize stress risers. A pin-in-box connection between tubular joints includes mating tapered threads (72), engagement of end shoulder (74, 76, 78, 80), and a low stress flex groove (82). The present invention allows the elongate joints to be used as both a casing string and a drill string, thereby saving significant time and expense.
PCT/US2001/050537 2000-11-03 2001-11-01 Casing drilling connector with low stress flex groove WO2002036923A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB0309281A GB2388171B (en) 2000-11-03 2001-11-01 Casing drilling connector with low stress flex groove
BRPI0115128-2A BR0115128B1 (en) 2000-11-03 2001-11-01 tubular column of oil field, and, method of formation thereof.
AU2002232873A AU2002232873A1 (en) 2000-11-03 2001-11-01 Casing drilling connector with low stress flex groove
CA002427280A CA2427280C (en) 2000-11-03 2001-11-01 Casing drilling connector with low stress flex groove
MXPA03003905A MXPA03003905A (en) 2000-11-03 2001-11-01 Casing drilling connector with low stress flex groove.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/706,204 2000-11-03
US09/706,204 US6406070B1 (en) 2000-11-03 2000-11-03 Casing drilling connector with low stress flex groove

Publications (2)

Publication Number Publication Date
WO2002036923A2 WO2002036923A2 (en) 2002-05-10
WO2002036923A3 true WO2002036923A3 (en) 2002-09-12

Family

ID=24836624

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/050537 WO2002036923A2 (en) 2000-11-03 2001-11-01 Casing drilling connector with low stress flex groove

Country Status (7)

Country Link
US (1) US6406070B1 (en)
AU (1) AU2002232873A1 (en)
BR (1) BR0115128B1 (en)
CA (1) CA2427280C (en)
GB (1) GB2388171B (en)
MX (1) MXPA03003905A (en)
WO (1) WO2002036923A2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6893054B2 (en) * 2003-03-04 2005-05-17 Schlumberger Technology Corporation Quick connection for tubulars
US7438329B2 (en) * 2005-01-11 2008-10-21 V&M Atlas Bradford, Lp Methods and connections for coupled pipe
GB2472861B (en) * 2009-08-24 2011-07-06 Dynamic Dinosaurs Bv Flexible couplings for tubular members
CN101839379A (en) * 2010-05-25 2010-09-22 陆金福 Threaded connection method of steel tubes
WO2012074984A2 (en) 2010-12-01 2012-06-07 Vermeer Manufacturing Company Tapered thread configuration with improved durability
US10274112B2 (en) 2013-06-06 2019-04-30 Bryan Lane Threaded connection
US9644771B1 (en) * 2013-06-06 2017-05-09 Bryan Lane Threaded coupling
US10273765B2 (en) * 2013-06-06 2019-04-30 Bryan Lane Threaded connection
JP5915608B2 (en) * 2013-09-12 2016-05-11 Ｊｆｅスチール株式会社 Threaded joint for oil well pipes with excellent seizure resistance
US9261207B1 (en) * 2014-12-12 2016-02-16 Precision Couplings, Llc Coupling with anti-rotational element
US11047413B2 (en) 2016-04-27 2021-06-29 Hydril Company Threaded and coupled tubular goods connection
US11008819B2 (en) 2017-10-30 2021-05-18 OCTG Connections, LLC Oil country tubular goods casing coupling
CN110500044B (en) * 2019-09-27 2024-02-09 衡阳华菱钢管有限公司 Threaded joint of anti-fatigue sleeve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825585A (en) * 1954-07-01 1958-03-04 American Iron & Machine Works Prestressed shrunk-fitted rotary drill collar and tool joint
US5505502A (en) * 1993-06-09 1996-04-09 Shell Oil Company Multiple-seal underwater pipe-riser connector
US5681059A (en) * 1995-12-15 1997-10-28 Mackie; Michael J. Pipe connector
US5931511A (en) * 1997-05-02 1999-08-03 Grant Prideco, Inc. Threaded connection for enhanced fatigue resistance
US6050610A (en) * 1997-05-20 2000-04-18 Hydril Company Stress reduction groove for tubular connection

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215429B (en) * 1988-03-04 1992-10-28 Nobuyuki Sugimura Stepped thread joint
US4892337A (en) * 1988-06-16 1990-01-09 Exxon Production Research Company Fatigue-resistant threaded connector
US5197553A (en) 1991-08-14 1993-03-30 Atlantic Richfield Company Drilling with casing and retrievable drill bit
US5358285A (en) * 1992-12-03 1994-10-25 Prideco, Inc. Stress relief groove for drill pipe
US5355968A (en) 1993-05-20 1994-10-18 Grant Tfw, Inc. Tool joint stress relief groove
US5502502A (en) * 1995-03-06 1996-03-26 Honeywell Inc. PLL-based method and apparatus for generating video drive signals from various sync formats
US5853199A (en) * 1995-09-18 1998-12-29 Grant Prideco, Inc. Fatigue resistant drill pipe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825585A (en) * 1954-07-01 1958-03-04 American Iron & Machine Works Prestressed shrunk-fitted rotary drill collar and tool joint
US5505502A (en) * 1993-06-09 1996-04-09 Shell Oil Company Multiple-seal underwater pipe-riser connector
US5681059A (en) * 1995-12-15 1997-10-28 Mackie; Michael J. Pipe connector
US5931511A (en) * 1997-05-02 1999-08-03 Grant Prideco, Inc. Threaded connection for enhanced fatigue resistance
US6050610A (en) * 1997-05-20 2000-04-18 Hydril Company Stress reduction groove for tubular connection

Also Published As

Publication number Publication date
WO2002036923A2 (en) 2002-05-10
BR0115128B1 (en) 2012-11-27
GB2388171A (en) 2003-11-05
BR0115128A (en) 2004-06-01
MXPA03003905A (en) 2004-09-10
US6406070B1 (en) 2002-06-18
CA2427280A1 (en) 2002-05-10
CA2427280C (en) 2009-04-21
GB2388171B (en) 2004-07-07
AU2002232873A1 (en) 2002-05-15

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